I think I found out the guest problem.

Notice the guest below me. It says "posting in HUGLAGHLAHGHALGHGHAOLG," which is what I did minutes before taking the screenshot. To test my theory, I will check to see if there is a guest that is "Posting in Actual Last Man Posting" after posting this.
EDIT: Doesn't seem like it's holding up yet.

EDIT EDIT:

Guest is posting in last man posting, correlating to the original post I made! It's holding up now!